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Zeolites for the separation of ethylene,ethane,and ethyne

Frontiers of Chemical Science and Engineering 2024年第9期18卷 137-146页

作者： Binyu Wang Qiang Li Haoyang Zhang Jia-Nan Zhang qinhe pan Wenfu Yan State Key Laboratory of Inorganic Synthesis&Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012China Key Laboratory of Advanced Energy Catalytic and Functional Materials Preparation College of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450012China Key Laboratory of Advanced Materials of Tropical Island Resources(Ministry of Education) School of Chemistry and Chemical EngineeringHainan UniversityHaikou 570228China

The cost-effective separation of ethylene(C_(2)H_(4)),ethyne(C_(2)H_(2)),and ethane(C_(2)H_(6))poses a significant challenge in the contemporary chemical *** contrast to the energy-intensive high-pressure cryogenic distillation process,zeolite-based adsorptive separation offers a low-energy *** review provides a concise overview of recent advancements in the adsorptive separation of C_(2)H_(4),C_(2)H_(2),and C_(2)H_(6)using zeolites or zeolite-based *** commences with an examination of the industrial significance of these compounds and the associated separation ***,it systematically examines the utilization of various types of zeolites with diverse cationic species in such separation *** then it explores how different zeolitic structures impact adsorption and separation capabilities,considering principles such as cation-πinteraction,π-complexation,and steric separation concerning C_(2)H_(4),C_(2)H_(2),and C_(2)H_(6)***,it discusses methods to enhance the separation performance of zeolites and zeolite-based adsorbents,encompassing structural design,modifications,and ion exchange ***,it summarizes current research trends and future directions,highlighting the potential application value of zeolitic materials in the field of C_(2)H_(4),C_(2)H_(2),and C_(2)H_(6)separation and offering recommendations for further investigation.

关键词： zeolite ethylene ethane cation-πinteraction π-complexation

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Enhancing oxidative desulfurization of polyoxometalate by integrating with a self-reductive framework

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Science China Materials 2024年第9期67卷 2925-2933页

作者： Yonghui Lin Xiaojun Zhao Shenzhen Chang Yixin Zhang Letian Gan Yuyang Tian qinhe pan Guangshan Zhu Key Laboratory of Advanced Materials of Tropical Island Resources Ministry of EducationSchool of Chemistry and Chemical EngineeringHainan UniversityHaikou570228China Faculty of Chemistry Northeast Normal UniversityChangchun130024China

With the strict control of sulfur content in fuels,oxidative desulfurization(ODS),a promising desulphurization technology,needs to be continuously *** this study,we integrated multiple approaches(fabricating a porous structure,increasing phosphomolybdic acid(PMo)loading,improving amphiphilicity,and enhancing the intrinsic activity of PMo using a reductive framework)into PAF-54 carriers to improve ODS catalytic *** catalytic performance suggested that PAF-54 was not simply used as a carrier for PMo by physical *** the binding process,electron transfer between PAF-54 and PMo formed Mo^(5+)with superior catalytic *** to the presence of PAF-54,the catalytic activity of PMo as the active component qualitatively improved to achieve rapid and efficient *** importantly,we found that other nitrogen-rich porous organic polymers can also reduce some of Mo^(6+)in PMo during loading,and its formation mechanism was *** work provides a feasible strategy for designing highly efficient DOS catalysts.

关键词： PAF-54 self-reduction oxidative desulfurization Mo^(5+)

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Metal-Organic Framework-based Wood Aerogel for Effective Removal of Micro/Nano Plastics

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Chemical Research in Chinese Universities 2022年第1期38卷 186-191页

作者： YOU Dongyu ZHAO Yujuan YANG Weiting pan qinhe LI Jiyang Key Laboratory of Advanced Materials of Tropical Island Resources Ministry of EducationSchool of Chemical Engineering and TechnologyHainan UniversityHaikou 570228P.R.China State Key Laboratory of Inorganic Synthesis&Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012P.R.China

The large amount of microplastic pollution in the aquatic environment has been regarded as a major challenge facing the world. Although some traditional water treatment processes can effectively remove microplastics in the millimeter range, research is still needed to solve the problem of removing smaller microplastics. Here, we made a durable zinc metal-organic framework-based composite material ZIF-8@Aerogel by in situ growing ZIF-8 on wood aerogel fibers, which can successfully remove microplastics in simulated water and seawater. The removal efficiencies on micro/nano plastics including poly(1,1-difluoroethylene)(60-110 nm) and polystyrene(90-140 nm) reached 91.4% and 85.8%, respectively. This work is expected to provide a new and efficient way to remove small-sized microplastic particles in the environment.

关键词： Aerogel Metal-organic framework Microplastic removal Environmental remediation

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Benzenesulfonic acid-grafted UIO-66 with improved hydrophobicity as a stable Brønsted acid catalyst

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Frontiers of Chemical Science and Engineering 2023年第10期17卷 1389-1398页

作者： Zongliang Kou Guanlun Sun Qiuyan Ding Hong Li Xin Gao Xiaolei Fan Xiaoxia Ou qinhe pan School of Chemical Engineering and Technology National Engineering Research Center of Distillation TechnologyCollaborative Innovation Center of Chemical Science and Engineering(Tianjin)Tianjin UniversityTianjin 300072China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China Department of Chemical Engineering School of EngineeringThe University of ManchesterManchester M139PLUK Nottingham Ningbo China Beacons of Excellence Research and Innovation Institute University of Nottingham Ningbo ChinaNingbo 315100China Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources School of Chemical Engineering and TechnologyHainan UniversityHaikou 570228China

Hydrothermal and catalytic stability of UIO-66 MOFs with defective structures are critical aspects to be considered in their catalytic applications,especially under the conditions involving water,moisture and/or ***,we report a facile strategy to introduce the macromolecular acid group to UIO-66 to improve the stability of the resulting UIO-66−PhSO3H MOF in aqueous phase *** detail,UIO-66−PhSO3H was obtained by grafting benzenesulfonic acid on the surface of the pristine UIO-66 to introduce the hydrophobicity,as well as the Brønsted acidity,then assessed using catalytic hydrolysis of cyclohexyl acetate(to cyclohexanol)in *** introduction of hydrophobic molecules to UIO-66 could prevent the material from being attacked by hydroxyl polar molecules effectively,explaining its good structural stability during ***-66−PhSO3H promoted the conversion of cyclohexyl acetate at ca.87%,and its activity and textural properties were basically intact after the cyclic stability *** facile modification strategy can improve the hydrothermal stability of UIO-66 significantly,which can expand its catalytic applications in aqueous systems.

关键词： metal−organic frameworks(MOFs) UIO-66 hydrolysis of cyclohexyl acetate hydrophobicity Brønsted acidity

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Template-directed Synthesis of Three Metal Oxalates via 4-Connected Building Units

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Chemical Research in Chinese Universities 2014年第6期30卷 889-893页

作者： TIAN Ruijing WANG Fuxiang DU Chunyu FENG Lijuan LIU Ying ZHANG Cailing pan qinhe Key Study Center of the National Ministry of Education for Tropical Resources Utilization Department of Materials and Chemical Engineering Hainan University Haikou 570228 P. R. China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin University Changehun 130012 P. R. China

Three novel compounds, [Co（en）3]2[Zr2（C2O4）7]·2H20（HNU-2, en=ethylenediamine）, [Co（NH3）6]· [Ce（CzO4）3（H2O）]·H2O（HNU-3） and [Co（dien）2][Gd（C2On）3]·0.75H2O（HNU-4, dien=dethylenetriamine） were hydro- thermal synthesized based on the templates of [Co（en）3]C13, [C0（NH3）6]C13 and [Co（dien）2]C13, respectively. The Zr4＋ Ce3＋ and Gd3＋ cations are all coordinated by four oxalates to form [M（C2O4）n（H2O）n]m （M=Zr, Ce or Gd; n=0 or 1; m=4 or 5）, which are similar to [In（C2O4）4]5- in NKB-1, and can be regarded as 4-connected building units. The [M（C2O4）a（H2O）n]m units are connected via sharing the bis-bidentate bridging oxalate ligands to form binuclears in HNU-2 and 1D ＂zigzag＂ chains in HNU-3 and HNU-4. cular building units to design 3D open frameworks with It is suggested that these compounds could be used as mole- zeolite topologies.

关键词： Coordination polymer Template-directed synthesis Metal oxalate

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Face-directed Strategy for the Construction of Polyoxovanadate-based Metal-Organic Tetrahedra

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Chemical Research in Chinese Universities 2023年第6期39卷 954-959页

作者： CHEN Huiping GONG Yaru CHU Qiangqiang panG Xiao HUANG Xiaojing TIAN Xudong YANG Weiting pan qinhe SU Zhongmin WANG Xinlong Key Laboratory of Advanced Materials of Tropical Island Resources Ministry of EducationSchool of ScienceHainan UniversityHaikou 570228P.R.China School of Chemical Engineering and Technology Hainan UniversityHaikou 570228P.R.China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012P.R.China

Polyoxometalate-based metal-organic polyhedra(MOPs)were of particular concern because of the various exquisite building blocks and the suitable constructional *** further understand the design and particularity of polyoxovanadate-based MOPs,(NH_(2)Me)_(8){[V_(6)O_(6)(OCH_(3))_(9)(C_(6)H_(5)PO_(3))]_(4)·(BPT)_(4)}·2DMF(HNU-74)and(NH_(2)Me)12{[V_(6)O_(6)(OCH_(3))_(9)(C_(6)H_(5)PO_(3))]4·(HBCBAIP)_(4)}(SO_(4))_(2)·MeOH·DMF(HNU-75)were constructed by a face-directed synthesis *** structures were assembled with four secondary building units as vertexes and four organic ligands served as *** from HNU-74,HNU-75 showed a carboxyl group free during the coordination process,resulting in the pore channels being blocked and the free carboxyl group linking outwards,paving the way for the formation of the 3D *** to the pore channels of HNU-74,the adsorption of I2 was studied and the adsorption capacity was 148 mg/g.

关键词： Metal-organic polyhedron Face-directed strategy Tetrahedral structure Iodine adsorption

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A metal-organic gel-based fluorescent chemosensor for selective Al3+ detection

A metal-organic gel-based fluorescent chemosensor for select...

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中国化学会第十届全国无机化学学术会议

作者： Dongxu Gu Weiting Yang Fuxiang Wang qinhe pan School of Science Hainan University

As an important metal element,aluminium has an important impact on environment and human health,thus the detection of Alhas become a hot *** this paper,we synthesized a Ni(Ⅱ)-based metal-organic gel (Ni-MOG),which can serve as an Alfluorescence sensor with high selectivity and *** addition,a composite film was further fabricated by hybridization of this Ni-MOG with polyvinyl *** composite film produced a rapid fluorescence response to Alsolutions at concentrations above 5×10 M in 5 *** effective detection of Alprovides a new insight into the water quality monitoring and has potential application value.

关键词： Ni-MOG Fluorescence Al3+-Chemosensor Composite film

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微波水热法构筑高性能SnO_2基乙醇传感器

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深圳大学学报（理工版） 2016年第2期33卷 147-153页

作者：李群黄金玉杜宇潘勤鹤海南大学材料与化工学院海南海口570100 深圳大学物理与能源学院广东深圳518060

以二水合二氯亚锡为原料,无任何添加剂,通过微波水热法快速合成氧化锡(Sn O2)纳米棒.使用X射线衍射和扫描电子显微镜对样品的结构、形貌进行表征.研究发现,制备的Sn O2纳米棒颗粒尺寸均一,分散性较好,纳米棒的表面布满颗粒状的突起.以... 详细信息

以二水合二氯亚锡为原料,无任何添加剂,通过微波水热法快速合成氧化锡(Sn O2)纳米棒.使用X射线衍射和扫描电子显微镜对样品的结构、形貌进行表征.研究发现,制备的Sn O2纳米棒颗粒尺寸均一,分散性较好,纳米棒的表面布满颗粒状的突起.以制得的Sn O2纳米棒构筑旁热式气敏元件,采用静态配气法测试了气敏元件对乙醇、甲醇、丙酮和氨气等气体的敏感性能.结果表明,该气敏元件对乙醇具有灵敏度高、检测下限低、选择性好、响应和恢复迅速等优点.

关键词：无机材料环境监测传感器气敏微波水热法氧化锡乙醇

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